gibson



'I UNITED STATES APATENT Ormea.

WILLIAM M. GIBSON, OFPHENIX, RHODE ISLAND, ASSIGNOR TO ALBERT C. GIBSON,OF SAME PLACE.

PUMP.

SPECIFICATION forming part of Letters Patent No. 227,761, dated May 18,1880.

l Application filed July 3l, 1879. n

To all whom it may concern:

Be it known that I, WILLIAM M. GIBSON,

of Phenix, in the county of Kent and State of Rhode Island, haveinvented .new and useful 5 Improvements in Pumps,^ofwhich the followingis a specification.

My improvements are more particularly intended for pumps used forordinaryhousehold purposes; an d their object is to furnish'a pump rowhich may be conveniently and expeditiously set up, and is dura-ble inallits parts and very effective in its operation.-

To this end the invention consists in the combination, with the body ofa pump having i 5 an internal screw-thread, of a suspended cylinderadapted to be inserted from the lower end of said body, having anexternal screw-thread upon one end for engagement with the said internalscrew-thread.

zo It also consists in a novel means of ,adjust ing a parallel motion,whereby the pump piston-rod is at all times maintained in line, and sidewear upon the several parts of the pump is obviated. v

It also consists in a novel method of securing the suction-pipe to thepump, enabling the connection to be made very conveniently andexpeditiously.

It also consists in various details and combinations of parts,hereinafter described.

In the accompanying drawings, Figure l represents a central verticalsection of a pump embodying my improvements. Fig. 2 is avertic'alsection of the top portion thereof, taken at right angles toFig. l; and Fig. 3 is a hori- Zontal section on the line x w, Fig. 1.

Similar letters of reference designate corresponding parts in all thehgures.

A designates the casing or body of thepump,

4o which is represented as made in one casting, and forms both thevacuum-chamber B and the receiving-chamber C.- D designates thepump-cylinder, which may be made of a piece of brass tubing, is adaptedto be inserted from the lower end of said casin g, and is suspended fromits upper end, the casing A being provided with an interna/lscrew-threaded socket,

a', and the said suspended cylinder, with a corrresponding screw-threadfor engagement with the former. .This mode of connections 5o enables atight joint to be conveniently and easily made. y y

In order to have the vacuum-chamber B at all times in communication withthe suctionpipe E, I place the suction-valve at the lower endof thesuspended cylinder D. A cap, D', is screwed upon the end ot' thecylinder, and forms, without any other parts, a seat for thesuction-valve D2, which may be made in one and the same piece of leatheras the packing, 6o b, between the cylinder and cap. i

The suction-pi pe E is connected to the base F ofthe pump by means of anipple, E', provided with a shoulder, c, bearin g upon the bottom of thebase, and secured' by a screw- 65 nut, E2, upon the opposite or underside ofthe l said base. This mode of connecting the suction-pipe enablesthe pump to be erected upon a shelf, F', and the work of making theconnection performedi'rom the top. 7o

rlhe casing A ofthe pump is secured to the base F by means of bolts d,which pass through open sided or slotted lugs e upon the side of thesaid casin g and enter corresponding lugs in the base. In the sides ofthe casing A are recesses f, for the reception of said bolt-heads, inorder to bring them partially under cover of the pump and nearer thepacking g, so as to make a more secure ljoint.

The piston or bucket G of the pump is of the 8o kind forming the subjectof Letters Patent No. 197,354, granted to me November 20, 1877, andhaving its valve h made of one piece oi' leather with the cup. v

G' designates the pump or piston rod which 85 passes through astuffing-box, t', in the head A', and thence upward to one end of thehandle H, to which it is connected. The fulcrum of said handle consistsof a swinging link, H', secured at its lower end to a lug extending 9ofrom the head A'.

I designates a radius link, of which two might be employed, one uponeach side of the piston-rod. The said link is connected to the handle Hat j, and is hinged at the other end to a fulcrum-piece or standard, A2,which is here represented as cast in one piece with the head A'. Thestandard A2, in order to el'ect the proper adjustment, is provided witha movable top piece, k, which may be adjusted and held in any positionby the bolt l.

The swinging fulcrum El' of the handle H and the radius-links'I, whenproperly adjusted, at all times maintain the piston-rod G in line withthe pump-cylinder, preventing` side wear of any of the parts.

If desirable, the handle H might be extended upon the other side of thepump, and thus afford means for two persons to operate the pump.

When the pump is to be used for lifting only, airenters through anopening, J ,in the head A'. When it is desired to use the pump forforcing, the thumb-screw m, which has a piece of leather or packingsecured to its lower end, is adjusted downward past the opening n,through which air passes and closes the opening J. rIhereceiving-chamber C then forms au air chamber', and by screwing a capover the mouth or nozzle K of the spoilt A3 and attaching,` a hose tothe nozzle L water may be forced to a height corresponding with thepower applied.

M designates'a pipe, which surrounds the piston-rod G and is screwed inthe head A. When the pump is used as a force-pump the said pipe extendsbelow the level of water in the receiving-chamber and prevents air fromleaking from the ainehamber C through the stuffing-box.

The opening J, through which air enters, communicates with a recess, O,in the head A', and, when the screw mis adjusted upward, water pouredinto the said recess will pass into the receiving-chamber G for thepurpose of charging the pump.

By my invention I produce a pump the parts of which may be readilyseparated and replaced by others, which may be conveniently erected, andin which the parallel motion may be very readily adjusted so as to keepthe piston-rod at all times in line.

What I claim as my invention, and desire to secure by Letters Patent,is-

l. The combination, with the body A of a pump having the internalscrew-thread, a, formed in its contracted opening below thedischarge-passage A3, and provided with a removable lower end, of aworking-cylinder, D, having an externa-l screw-thread upon its upperend, and provided at its lower end with a check-valve, saidworking-cylinder D being of less diameter than the removable lower endofthe body of the pump, substantially as set forth.

2. The combination, with the piston-rod Gr, handle or lever H, link H',and radius-link I, ofthe standard A2, cast in one piece with the headA', and provided with the adj ustable top piece, 7c, substantially asspecied.

3. The combination, with the base F, of the pump-body A, provided withopen or slotted lugs e and recesses f in the sides of said body, adaptedto receive within them the heads of the bolts d, whereby the bolts arebrought near the joint and are protected from injury, substantially asspecified.

WILLIAM M. GIBSON.

Witnesses VERNUM A. BAILEY, lVI. G. KNIGHT.

